NB/T 47018.2-2017Technical delivery conditions of welding materials for pressure equipment - Part 2: Electrodes for steel (English PDF)

Foreword

NB/T 47018-2017 Technical Permission of Welding Materials for Pressure Equipment can be divided into 5 Parts:

--- Part 1: General Rule;

--- Part 2: Electrodes for Steel;

--- Part 3: Steel Electrodes and Rods for Gas Shielded Arc Welding;

--- Part 4: Electrodes and Fluxes or Submerged Arc Welding;

--- Part 5: Stainless-Steel Strip Electrodes and Fluxes for Overlay Welding. This Part is the Part 2 of NB/T 47018-2017.

This Part was drafted as per the rules specified in GB/T 1.1-2009 Directives for Standardization - Part 1: Structure and Drafting of Standards.

This Part revised NB/T 47018.2-2011 Technical Permission of Welding Materials for Pressure Equipment - Part 2: Electrodes for Steel. Compared with NB/T 47018.2-2011, the major technical Changes of this Part are as follows:

--- According to the provisions of national standards on electrodes of 2012 Version, change the name of GB/T 5117 Carbon Steel Covered Electrodes into Electrodes for Non-Alloy and Fine-Grain Steels; change the name of GB/T 5118 Low Alloy Steel Covered Electrodes into Covered Electrodes for Manual Metal Arc Welding of Creep-Resisting Steels; and newly add GB/T 32533 Covered Electrodes for Manual Metal Arc Welding of High-Strength Steels.

--- Reserve 7 electrode models of E4303, E4315, E4316, E5015, E5016, E5018, E5515-G in the electrodes for non-alloy and fine grain steels; and the model formulation of the electrodes is the same as that in the new version of standard, however, there are some changes in the technical requirements. Reserve 5 electrode models, and the corresponding changed models are put into the brackets according to the provisions of new version of standard: E5015-E (E5015-N1), E5016-E (E5016-N1), E5515-E (-40°C) (E5515-N1), E5516-E (E5516-N1), E5515-E (-50°C) (E5515-N3). Add totally 23 electrode models, including E4318, E5516-G, E5518-G (-30°C), E5018-G (-40°C), E5518-G (- 40°C), E5018-1, E5015-G, E5016-G, E5015-N2, E5515-N2, E5018-N2, E5516- N3, E5518-N3, E5515- N5, E5516-N5, E5518-N5, E5015-G (-70°C), E5015-N5, E5016-N5, E5018-N5, E5015-N7, E5016-N7, and E5018-N7.

1 Scope

This Part of NB/T 47018-2017 specifies the technical requirements, deposited metal bending test and product marking for the steel electrodes.

This Part is applicable to the electrodes for non-alloy and fine-grain steels, electrodes for creep-resisting steels, electrodes for high-strength steel, and stainless-steel electrodes used for the pressure equipment.

2 Normative References

The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this document.

GB/T 983-1995 Stainless Steel Covered Electrodes

GB/T 983 Stainless Steel Covered Electrodes

GB/T 2653 Methods of Bend and Compression Tests for Welded Joint

GB/T 3965 Methods for Determination of Diffusible Hydrogen in Deposited Metal

GB/T 5117-1995 Carbon Steel Covered Electrodes

GB/T 5117 Covered Electrodes or Manual Metal Arc Welding of Non-Alloy and Fine Grain Steels

GB/T 5118-1995 Low Alloy Steel Covered Electrodes

GB/T 5118 Covered Electrodes for Manual Metal Arc Welding of Creep-Resisting Steels

GB/T 32533 Covered Electrodes for Manual Metal Arc Welding of High-Strength Steels

NB/T 47013.2 Non-Destructive Testing of Pressure Equipment - Part 2: Radiographic Testing

NB/T 47014 Welding Procedure Qualification for Pressure Equipment

NB/T 47018.1 Technical Permission of Welding Materials for Pressure Equipment - Section 1: General Rule

3 Technical Requirements